420 



NA TURE 



[February 3, 1910 



Cumming: : Gas-washing bottles with a very slight resist- 

 ance to the passage of a gas. Three forms are described. 

 In one a short side-tube is joined to tlie inlet-tube of an 

 ordinary washing bottle and bent upwards, so that the 

 gas bubbles passing through it carry some liquid with 

 them, causing constant circulation of same. In a second 

 and more efficient form, the gas passes through a length 

 of 5 mm. tubing, slightly inclined to the horizontal. Below 

 this, and connected to its ends, is a bulb of liquid, so that 

 here again the passage of gas through the tube causes a 

 circulation of liquid. The third form described is a modi- 

 fication of the Richardson wash-bottle, in which the 

 pressure is reduced by lengthening the nozzle through which 

 the gas enters the washing bulb. — Dr. F. Mollwo Perkin 

 and W. E. Hug:hes : Studies in the electro-deposition of 

 metals. The authors describe a rotating kathode employed 

 for rapid electro-deposition of metals. It consists of sheet 

 platinum spun up so as to form a narrow thimble, the 

 upper end being open and having a stout iridium wire 

 fused to it. This electrode, which has an active surface 

 of 16-3 cm., is rapidly rotated within a cylindrical platinum 

 gauze anode. In other cases, particularly when graded 

 potential methods are employed, a spiral anode of platinum 

 is rotated within the gauze cylinder, which then functions 

 as kathode. In the potential measurements a cylindrical 

 glass funnel with a glass tube sealed in the side is 

 employed for holding the electrode. 



DIARY OF SOCIETIES. 



THURSDAY, Febkuaky ;. 



Royal Society, at 4.W.— The Thyroid and ParachyToid Glands through- 

 . out Vertebrates : F. D. Thomoson.— The Transmission of Trv/-a>iKsoma 

 lewisi by the Rat-flea iCeratophvllus fascialiis) : Prof. E. A. Minchin 

 and J. D. Thomson.— On the Relalive .Sizes of the Organs of Rats and 

 ■ Mice bearing Malignant New Growths : Dr. F. Medigreceanii.— Further 

 Evidence of the Homogeneity of the Resistance to the Implantation of 

 Malignant New Growths: Dr. E. F. Bashford and Dr. B. R. G. Russell. 

 —The Contrast in the Reaction to the Implantation of Cancer after the 

 Inoculation of Living and Mechanically Disintegrated Cells : Dr. M. 

 Haaland. 



RoNTGEN .SociETV, at 8.15.— The Fssential Ambiguity of X-ray Repre- 

 sentation, and some Methods of Solution : Dr. W. Cotton. 



LiNNEAN .SociETv, at 8.— Further Discussion of the Origin of Vertebrates : 

 Dr. A. Smith Woodward. F.R.S., Prof. A. Dendy, F.R.S., and other 

 speakers, with Dr. Gaskell's reply. 



RovAL Geogkaphtcal Society, at 5.— Waves in Water, Sand, and Snow : 

 Dr. Vaughan Cornish. 



FRIDAY, February 4. 



Royal Institution, at 9.— The Heredity of Sex: Prof. W. Bateson, 

 F.R.S. 



Institution of Civit. Engineers, at 8.— The Construction and Setting- 

 out ofa Low-level Sewer: L. T. Wilson. 



Geologists' Association, at 8.— Presidential Address : Fifty Years' Work 

 of the Association: Prof. W. W. Watts, F.R.S. 

 MONDAY, Feukuary 7. 



Royal Institution, at 5. — General Meeting. 



Royal Society of Arts, at 8.— The Petrol Motor : Ptof. W. Watson, 

 F.R.S. 



Society of Chemical Industry, at 8.— The Manufacture of Ammonia- 

 Soda ; its Present State and its Future : Prof. A. Colson (Paris). 



Royal Geographical Society, at 8.30.— The Geographical Conditions 

 affecting the Development of Australia : Prof. J. W. Gregory, F.R.S. 



Aristotelian Society, at 8.— Kant's Account of Causation: A. D. 

 Lindsay. 



Victoria Institute, at 4.30.— Species and their Origin : Rev. John 

 Gerard. 



TUESDA Y, February 8. 



Royal Institution, at 3. — The E: 



nd their Expression ; Prof. 

 F. W. Molt, F.R.S. 



Institution of Civil Engineers, at 8.— Notes on the Sheflield Water- 

 supply and Statistics relaiing thereto : L. S. M. Marsh.— Statistical and 

 Experimental Data on Filtration : W. R. Baldwin-Wiseman. 

 WEDNESDAY, February 9. 



Royal Society of Arts, at 8.— Colour Blindness : Dr. F. W. Edridge- 

 Green. 



Geological Society, at 8. 



THURSDAY, February 10. 



Royal Society, at i.-i,o.— Probable Pafirs : Some Phenomena of Magnetic 

 Disturbances at Kew : Dr. C. Chree, F.R.S.— On a Novel Phenomenon 

 in the Diurnal Inequality of Terrestrial Magnetism : R. B. Sangster. — 

 The Absorption Spectra of Vapours of the Alkali Metals : Prof. P. \'. 

 Bevan. — On the Shapes of the Isogeotherms under Mountain Ranges in 

 Radio-active Districts: Prof. C. H. Lees, F.R.S.— On the Prop.agation 

 of Disturbances in a Fluid under Gravity: F. B. Pidduck.— On the Flow 

 of Water through Pipes and Passages having Converging or Diverging 

 Boundaries: Dr. A. H. Gibson.— The EITect of Pressure upon Arc 

 Spectra : Titanium : R. Rossi. 



NO. 2IOI, VOL. 82] 



Institution of F.i.ectrical Engineers, at 8. — Losses off Transmission 



Lines due to Brush Disrharge, with Special Reference to the Case of 



Direct Currents : E. A. Watson. 

 Mathematical Society, at 5.50. — A Note on Double-sixers of Lines : 



H. W. Richmond.— On the Diffraction of a Solitary Wave : Prof. H. 



Lamb. 

 Royal Geographical Society, at s. — Waves in Water, Sand, and Snow : 



Dr. Vaughan Cornish. 



FRIDAY, February ii. 



Royal Institution, at 9, — Electrical and other Properties of Sand : 

 C. E. S. Phillips. 



Physical Society, at 8. — Annual General Meeting. President's Address. 



Royal Astronomical Society, at 8. — Anniversary Meeting. 



Malacological Society, at 8. — Unio, Margaritana, Pseudanodonta, and 

 their Occurrence in the Thames Valley : Fritz Haas.— (i) Pleistocene, 

 Holocene, and recent Non-marine Mollusca from Mallorca ; (2) Marine 

 Mollusca from Alcudia, Mallorca : Rev. R. Ashington Bullen.— Descrip- 

 tion of a New Species of Vivipara from New Guinea: H. B. Preston. — 

 Description of a New Species of Unio from the English Wealden Forma- 

 tion : R. Bullen Newton. 



SATURDAY, February 12. 

 Royal Institution, at 3.— Electric Waves and the Electromagnetic 

 Theory of Light: Sir J. J. Thomson, F.R.S. 



CONTENTS. PAGE 



The Development of Glass-making in Jena . . . 391 



The Millais Game-birds. By R. L 392 



The Manufacture of Leather 393 



Memoirs on Marine Zoology 393 



Engineering Science 394 



Popular Natural History. By Dr. C. Gordon 



Hewitt 395 



Our Book Shelf:— 



Stewart : " Recent Advances in Physical and Inorganic 



Chemistry" .... 396 



Houghton : "The Elements of Mechanics of Materials. 

 A 'Text-book for Students in Engineering Courses " ; 

 Charles and Hewitt: " E.xperimenlal Mechanics 



for Schools " 396 



Macfie : " Air and Health "' 397 



Letters to the Editor : — 



The Natural History Museum. — Prof. A. Sedg- 

 wick, F.R.S • ■ • • 397 



Markings on Mars as seen with Small and Large 



Telescopes. — Dr. Percival Lowell 397 



Colour-blindness. — Dr. William Ettles ; The 



Writer of the Article 39S 



Records of the Earthquake of Janu.'^ry 22. — Dr. 



Charles Chree, F.R.S 39S 



An Earthquake Phenomenon. — Prof. J. Milne, 



F.R.S 398 



The Preparation of Silicon. A Warning. — F. H. 



Power 39S 



Intermittent Glow of the Tail of the New Comet. — 



J. H. Elgie 399 



Unemployed Laboratory Assistants. — Godfrey Reiss 399 

 The Arolla Pine. (Illiislrated.) By T. G. B. . . 399 

 On Halley's Comet as seen from the Earth. 



(With Diagram.) By P. H. Cowell, F. R. S. ... 400 

 Jubilee of the Theory of Electrolytic Dissociation. 



By Prof. James Walker, F.R.S 401 



Prof. F. W. Kohlrausch. By G. C. F 402 



Sir Charles Todd, K.C.M.G., F.R.S. 403 



Notes 403 



Our Astronomical Column :- 



Astronomical Occurrences in February 408 



Mars 408 



Caroline Herschel and Her Comet Seeker 40S 



Eddy Formation in the Wake of Projecting Ob- 

 stacles. (]Vilii Diagrams.) By Prof. G. H. Bryan, 



F.R.S 40S 



The New Comet (igioi?.) (Illustrated.) 409 



The Messina Earthquake and the Accompanying 



Sea-waves. (With Map.) By C. D 410 



The Marine Aquartum, Madras 411 



Indian Museum Publications 412 



Mendeleeff's Life and Work. By Sir William A. 



Tilden, F.R.S 412 



University and Educational Intelligence 417 



Societies and Academies 418 



Diary of Societies 420 



